Burgess and new partner Officer Sorensen (guest star Kevin Kane) respond to a noise complaint from a house, only to find a dead teenage girl inside. The unit investigates the murder, which turns out to be the home of famous local baseball player Jake McCoy (guest star Billy Burke),Chicago PD Season 5 who happens to be an old friend of Olinsky's. Also, after Lindsay mysteriously receives an arrangement of daisies, Halstead tracks them to a florist near Leavenworth Penitentiary, a prison which Erin reveals her father has served time in.The Intelligence Unit investigates after a body and a bag full of fentanyl, a drug that has been linked to a string of overdoses throughout Chicago, wash ashore. Meanwhile,Chicago PD Season 5 DVD Platt informs Tay that she has been reassigned to her original post, and Mouse causes tension within the unit as he continues to try and have a felony charge dropped so he can reenlist in the Army.